NITROGEN TRIFLUORIDE AND GLOBAL WARMING
Posted by: Henry in CHEMICALS, ENVIRONMENT, FUEL & ENERGY, MANUFACTURING, RE-CYCLING, SECURITY & SAFETY, WATER Add commentsNF3 On green house gas emission
GLOBAL WARMING POLLUTANTS
Scientists Claim NF3 Poses Greater Greenhouse Risk than CO2
Nitrogen trifluoride (NF3), used as a plasma etchant and for equipment cleaning in the semiconductor industry, has a lifetime of 550 years and a global warming potential thousands of times greater than Carbon dioxide, according to scientists in the Earth System Science Department at the University of California, Irvine. The substance is not included in the Kyoto Protocol on Climate Change because it was produced in much smaller quantities in 1995 when the Protocol’s data was gathered. Leading producers of NF3 include Air Products, Formosa Plastics, Mitsui Chemicals and Kanto Denka Kyogo. According to scientists, current production is approximately 4,000 metric tonnes/year. Planned expansions could double that by 2012. While most of the NF3 used in production processes is destroyed, scientists argue that some fraction must escape to the atmosphere during the process and when the substance is being transported or disposed of.
FLOATING TOXINS
Air Products, a major producer of Nitrogen trifluoride, responded that the study presents an “inaccurate and implausible scenario.” According to Corning Painter, vice president of global electronics for the company, NF3 serves as a source for Fluorine, which is used to clean manufacturing equipment. Of the two percent that isn’t consumed in the process, most of the gas is destroyed by emission control equipment
Sourced and published by Henry Sapiecha Feb 2009
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April 26th, 2010 at 2:27 pm
The effects of Global Warming is getting much stronger these days. We should concentrate more on alternative energy to reduce carbon emissions.
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April 30th, 2010 at 7:56 pm
GOOD LUCK AND THANK YOU FOR THE NICE COMMENTS
HENRY SAPIECHA
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